Daily dose of cannabis extract could reverse brain's decline in old age, study suggests https://i.guim.co.uk/img/media/d363c1ff1d80081cdd1325fda25795b2675b1dc9/0_173_5184_3110/master/5184.jpg?w=1225&q=55&auto=format&usm=12&fit=max&s=3aa530de75d34e34f8631135399ec1f7 Older mice given THC improved so much that their performance in tests matched those of healthy drug-free young mice – and benefits lasted for weeks after the infusions ended. Regular low doses of THC dramatically boosted memory and learning in older mice, say scientists, who plan a clinical trial in humans later this year 8 May 2017 https://www.theguardian.com/science/2017/may/08/daily-dose-of-cannabis-extract-could-reverse-brains-decline-in-old-age-study-suggests-thc [with comments] study: http://www.nature.com/nm/journal/vaop/ncurrent/full/nm.4311.html